Fluids Flashcards
What is negative and positive fluid balance
Negative- less fluid intake than urine/vomiting/diarrhoea output.
Positive- more fluid intake than output.
Reduced urine output- Oliguria
Body fluid is made up of
Fluids contains on average 52-60% body weight.
2/3 intracellular
1/3 extracellular fluid which is divided into plasma and interstial fluid.
Fluid circulates between areas by diffusion( usually a passive movement of high concentration to low concentration).
Dehydration can cause
Impaired cognitive function Headaches Fatigue Less elasticity in skin Oliguria Cold hands and feet Hypotension Tachycardia
What cause dehydration
Dementia/cognitive impairment Fluid restrictions- due to heart failure Incontinence- Fear of drinking due to incontinence, poor mobility etc Polyuria- excessive amounts of urine production usually caused by hyperglycaemia(excessive glucose in the blood stream) Haemorrhaging Excessive sweating/fever Nausea/vomiting Burns
Fluid overload is caused by
Renal impairment
Liver disease
Heart failure
Chronic fluid over load signs/symptoms are
Fatigue
Dyspnoea- difficulty breathing due to pulmonary oedema, persistent cough
Pitting Oedema- ankle swelling
Tachycardia
Heart failure symptoms
Tachycardia
Left side heart- back up of fluid in lungs(pulmonary oedema), breathlessness, cough, not enough blood throughout body causing weakness throughout body
Right side heart- back up fluid build in body causing oedema in legs, tiredness